President of basketball operations Danny Ainge said earlier this offseason that Rondo was doing some of his rehabilitation at the college (located in Rondo's hometown) and has also spent time in Florida with famous surgeon Dr. James Andrews. The four-time All-Star has been spotted in Las Vegas and did at least some rehab work at the Celtics team facility in Waltham.

TheCardinalConnect.com shared a photo of Rondo and Louisville guard Chris Jones standing next to each other on a basketball court earlier this week. The picture was taken from Jones' Instagram account, but it's a private account so I couldn't embed the photo here.

As far as we know, Rondo still hopes to return by training camp. It would make sense for the Celtics to exercise patience with his rehabilitation, though, and not let him anywhere near the court until he's 100 percent ready.